Final answer:
The statement that a 'goodness of fit' model clearly demonstrates that the Egyptian pyramids were the product of independent invention is not accurate.
Step-by-step explanation:
A 'goodness of fit' model is used to determine whether a set of data fits a particular theoretical distribution or model. In the context of the Egyptian pyramids, the statement that the 'goodness of fit' model clearly demonstrates that the pyramids were the product of independent invention and not diffusion from an unknown and unrecognized source is not accurate. The construction of the pyramids involved advanced engineering skills and a high level of organization, which suggests that they were the result of independent invention rather than diffusion.